This is in progress... Contact Bob Diaz or Randy Cutter for information on the1989 dissolved oxygen and water quality parameter data series. Contact Al Kuo for information on oxygen data from the York River collected hourly in 1996 from several depths near the channel at Gloucester Point. Contact Bob Diaz or Randy Cutter for information on the 1996 time series including D.O. and w.q. data collected as simultaneous long-term sediment profiling images were collected in the York River, near Kuo's oxygen sensor array.